# Data rectangling {#sec-rectangle-data}

```{r}
#| results: "asis"
#| echo: false
source("_common.R")
```

## Introduction

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### Prerequisites

In this chapter we'll continue using tidyr, which also provides a bunch of tools to rectangle your datasets.
tidyr is a member of the core tidyverse.

```{r}
#| label: setup
#| message: false

library(tidyverse)
```

<!--# TO DO: Write chapter around unnest, hoist, etc. -->